From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:41376 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751688AbdLLKLY (ORCPT ); Tue, 12 Dec 2017 05:11:24 -0500 Subject: Patch "blk-mq: Avoid that request queue removal can trigger list corruption" has been added to the 4.14-stable tree To: bart.vanassche@wdc.com, alexander.levin@verizon.com, axboe@kernel.dk, gregkh@linuxfoundation.org, hare@suse.com, hch@lst.de, jthumshirn@suse.de Cc: , From: Date: Tue, 12 Dec 2017 11:11:14 +0100 Message-ID: <15130734741169@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled blk-mq: Avoid that request queue removal can trigger list corruption to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: blk-mq-avoid-that-request-queue-removal-can-trigger-list-corruption.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Tue Dec 12 10:32:42 CET 2017 From: Bart Van Assche Date: Wed, 8 Nov 2017 10:23:45 -0800 Subject: blk-mq: Avoid that request queue removal can trigger list corruption From: Bart Van Assche [ Upstream commit aba7afc5671c23beade64d10caf86e24a9105dab ] Avoid that removal of a request queue sporadically triggers the following warning: list_del corruption. next->prev should be ffff8807d649b970, but was 6b6b6b6b6b6b6b6b WARNING: CPU: 3 PID: 342 at lib/list_debug.c:56 __list_del_entry_valid+0x92/0xa0 Call Trace: process_one_work+0x11b/0x660 worker_thread+0x3d/0x3b0 kthread+0x129/0x140 ret_from_fork+0x27/0x40 Signed-off-by: Bart Van Assche Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Johannes Thumshirn Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- block/blk-core.c | 1 + 1 file changed, 1 insertion(+) --- a/block/blk-core.c +++ b/block/blk-core.c @@ -339,6 +339,7 @@ void blk_sync_queue(struct request_queue struct blk_mq_hw_ctx *hctx; int i; + cancel_delayed_work_sync(&q->requeue_work); queue_for_each_hw_ctx(q, hctx, i) cancel_delayed_work_sync(&hctx->run_work); } else { Patches currently in stable-queue which might be from bart.vanassche@wdc.com are queue-4.14/blk-mq-avoid-that-request-queue-removal-can-trigger-list-corruption.patch